"We’ve crossed the Rubicon here," said a Pentagon official, who spoke on condition of anonymity.

"There is a concern that we not lash out. But there’s an even stronger sense that we have to hit not just the groups involved but the people who give them money and the people who give them shelter."

On Tuesday, a senior U.S. official told MSNBC.com that "no option has been taken off the table." Asked if that included nuclear weapons, one senior official said: "I said no option is out of the question. That’s precisely what I mean." http://www.msnbc.com/news/627086_asp.htm?0ql=chp

I think whether for Israel or the United States, the use of all their military might seems to be justified at this point.